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Pulse-type laser adjustable rapid normal pressure intelligent drive circuit

A technology for driving circuits and lasers, used in lasers, laser parts, semiconductor lasers, etc., can solve the problems of limiting the effective operation of pulsed lasers, unfavorable miniaturization and portable applications, and the shortest rise/fall time of the output pulse current.

Active Publication Date: 2015-08-19
BEIJING RES INST OF TELEMETRY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (1) The shortest rise / fall time of the output pulse current of the existing laser pulse drive power supply is relatively long, most of which exceed 25 nanoseconds, which limits the effective operation of pulsed lasers at room temperature
[0007] (2) The existing laser pulse drive power supply does not have the function of pulse peak modulation, and cannot realize the application of pulsed lasers in photoacoustic gas monitoring
[0008] (3) The existing laser pulse drive power supply is in the form of a workbench, which is large in size and expensive, which is not conducive to miniaturization and portable applications

Method used

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  • Pulse-type laser adjustable rapid normal pressure intelligent drive circuit
  • Pulse-type laser adjustable rapid normal pressure intelligent drive circuit
  • Pulse-type laser adjustable rapid normal pressure intelligent drive circuit

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Embodiment

[0061] A pulsed laser adjustable fast normal pressure intelligent drive circuit, such as figure 1 As shown, it includes control circuit (1), high-speed drive circuit (2), energy storage element charging and discharging circuit (3), pulsed laser and its protection circuit (4), charging energy regulation circuit (5), average current monitoring circuit (6), pulse peak monitoring circuit (7) and energy rapid discharge circuit (8).

[0062] Among them, the control circuit (1) includes MCU, A / D and D / A; the MCU is used as the controller to directly output the control signal to the high-speed drive circuit (2), so that the energy storage element charging and discharging circuit (3) works, through A The / D chip collects the current state from the pulse drive circuit, thereby adjusting the voltage output to the charging energy regulation circuit (5) through the D / A, changing the energy on the energy storage element, and adjusting the pulse current amplitude and change law in the circui...

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PUM

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Abstract

The invention relates to a pulse-type laser adjustable rapid normal pressure intelligent drive circuit, suitable for driving a quantum cascade laser (QCL) in environment gas opto-acoustic spectrum monitoring, and also used for occasions where a QCL or other pulse-type lasers are employed in infrared counteraction, narcotics and explosive monitoring, and terahertz imaging fields, and belongs to the electronic equipment technical field. The pulse-type laser adjustable rapid normal pressure intelligent drive circuit can output current with an amplitude greater than 1.7 amperes under a 12V DC power source and an equivalent resistor 2.73 omega; in addition, increase / decrease time is no more than 20 nanoseconds, a pulse width can be randomly adjusted, a smallest pulse width can be as low as 20 nanosecond, and a largest repetition frequency exceeds 1 MHz; the intelligent drive circuit has shorter edge time compared with a present laser pulse driving circuit, and an adjusting scope of pulse parameters is wider and more flexible.

Description

technical field [0001] The invention relates to an adjustable fast normal pressure intelligent drive circuit for pulsed lasers, which is suitable for driving quantum cascade lasers in photoacoustic spectrum monitoring of ambient gases, and can also be used for infrared countermeasures, drug and explosive monitoring, terahertz imaging, etc. Field The application of quantum cascade lasers or other pulsed lasers belongs to the technical field of electronic equipment. Background technique [0002] The pulsed laser works in the pulse power supply mode, which avoids the serious problem of heat generation under continuous high current operation, and reduces the requirements for temperature control, which is conducive to cost saving and convenient use. As a pulsed laser, Quantum Cascade Laser (QCL) is a new type of infrared coherent light source, which has the characteristics of small size, coherence, and tunability. Gas, industrial waste gas, etc.), medical disease diagnosis (pati...

Claims

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Application Information

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IPC IPC(8): H01S5/042H01S3/09
Inventor 郗洪柱边文宾彭泳卿周建发郑义杨显涛郑林赵汗青蒙瑰
Owner BEIJING RES INST OF TELEMETRY
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